In modern wars, all most of the perforation wound, and the normal-frequency ventilation can't work well to the state of an illness, but the high-frequency ventilation can do it.

在现代战争中，伤员大部分都为枪弹伤(系贯穿伤)，而对于这种伤病情况，普通的常频呼吸机不能够达到最佳的通气效果，而高频呼吸机却能够达到较好的通气治疗效果。

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It is a very complicated problem that is not only related to the shock wave interaction, but also to the shape, size and natural frequency of the ventilation structure.

它不仅与冲击波的作用情况有关，而且与通风构筑物的形状、大小、自振周期等因素有关。

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Objective To investigate and evaluate the application and safety of high frequency oscillatory ventilation(HFOV) in the treatment of neonates with respiratory failure.

目的探讨高频振荡呼吸机在治疗新生儿呼吸衰竭中的应用价值及其安全性。

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